theodolite surveying material for sachivalayam exams for all civil and mechanical aspirants,

The theodolite is one of the most versatile and accurate surveying instrument used for the measurement of horizontal and vertical angles.

Theodolites are primarily classified as

(i) Transit

(ii) Non – transit

Definition

A theodolite is called a transit theodilote, when its telescope can be revolved through a complete revolution about its horizontal axis in a vertical plane, where as in non – transit type, the telescope can not be transited.

• Theodolites are also calssified as

(i) Vernier theodolites and
(ii) Micrometer theodolites,

according as verniers or micrometers are fitted to read the graduated circles. Theodolites are made of various sizes varying from 8cm to 25cm the diameter of the graducated circle on the lower plate defining 216 Building Construction and Maintenance Technician the size.

 

• 8cm to 12 cm instruments are used for general survey and engineering work, while 14 cm to 25 cm instruments are used for triangulation work.
• There are three main types.
  i) The Transit
  ii) The plain or Y
  iii) The Everest

click here to download the Book:- THEODOLITE

and also click here to get the previous classes materials 

This is about theodolite surveying material for sachivalayam

Visit again